now the fbi is warning of potential violence here at home. a bulletin is out warning of protests in u.s. cities and extremist groups in this country that they believe could exploit anger. melissa mollet in the news room with more on the situation. melissa, good morning. >> many good morning, aaron. >>> though it makes no information about specific threats, the bulletin is warning first responders of large protests in the united states. this is video from cairo. protesters in the streets throwing rocks at the military. the military had been constructing a concrete barricade to protect the u.s. embassy there. bracing for a rally after morning prayer today. 11 u.s. compounds have been under attack. one protester has also been killed. the protests are over a film made here in the u.s. considered blasphemous to islam. the protests have spread from libya and egypt to yemen, iran, and iraq. some groups in dcairo are condemning the violence but calling for a peaceful million man rally today. there are worries that protest could turn violent. the fbi